CodeSampleX

Sample

Track line and column positions in YAML parsing with LineCounter

sha256:8af464f6341787aea033b8231fdcade3f404e2b9eed9f1ee943f8600313cffde

Publication state. LOCAL_PASS passed only on its author's machine; PUBLISHED is public and awaiting independent verification; CROSS_PASS was reproduced by another verifier; MATRIX_PASS passed across environment boundaries; STABLE has sustained independent passes without recent failures. Evidence strength. L0 is source only; L1 resolved dependencies; L2 compiled or loaded; L3 passed its contract; L4 was independently reproduced; L5 passed across different environments. MIT-0

Execution evidence

Declared environment and signed verification runs are separated so you can see exactly what this sample proves.

Evidence basis
Independent cross-verification
Verification receipts
1
Verification level
L4_CROSS_PASS
Declared environment windows 11 x64 npm

Verification-run environments

Environment Contract Stages Run
node 22 · linux alpine/x64 · docker ed25519:2175b912ea1c23b1 PASS compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS
CONTAINER_RUN · node-typescript@1
2026-08-19

Case

HOW
Goal
Track line and column positions in YAML parsing with LineCounter
Packages
Symbols
  • LineCounter
  • parseDocument
Created
2026-08-19T02:58:54Z

Contract

  1. LineCounter tracks line start offsets during YAML document parsing
  2. linePos translates character offsets to 1-indexed line and column coordinates
  3. parseDocument integrates with LineCounter to map AST node ranges to source positions
  4. LineCounter supports manual line registration via addNewLine

Files

  • PROMPT.md
  • csx.json
  • package-lock.json
  • package.json
  • spec.json
  • src/index.mjs
  • test/contract.mjs

Download the source artifact (tar.gz)

Origin Seeder

anonymous